In one of the questions raised in this website, I learned that interpreters will not be soon replaced by machines. The more fundamental question is whether there will be any need for English interpreters when there is a chance that many of the politicians and diplomats, businessmen, etc will speak English and, therefore, will not need any intermediary communicator i.e interpreter. Is there any chance that in the future the level of English proficiency of the people rises so that interpreters become redundant? Is it at all justifiable that even when the level of English proficiency is so high in the world, interpreters be used and trained.